1. School of Medicine & Pharmacology, University of Western Australia, Crawley, WA, Australia
2. Pleural Medical Unit, Institute for Respiratory Health, Nedlands, WA, Australia
3. Department of Respiratory Medicine, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
4. Division of Pulmonology, Department of Medicine, Stellenbosch University and Tygerberg Academic Hospital, Cape Town, South Africa
5. Division of Thoracic Surgery, Toronto General Hospital University Health Network, University of Toronto, Toronto, ON, Canada